Browsing NTNU Open by Author "Riepel, Doreen"
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Authenticated Key Exchange and Signatures with Tight Security in the Standard Model
Han, Shuai; Jager, Tibor; Kiltz, Eike; Liu, Shengli; Pan, Jiaxin; Riepel, Doreen; Schäge, Sven (Peer reviewed; Journal article, 2021)We construct the first authenticated key exchange protocols that achieve tight security in the standard model. Previous works either relied on techniques that seem to inherently require a random oracle, or achieved only ... -
Key Exchange with Tight (Full) Forward Secrecy via Key Confirmation
Pan, Jiaxin; Riepel, Doreen; Zeng, Runzhi (Journal article; Peer reviewed, 2024)Weak forward secrecy (wFS) of authenticated key exchange (AKE) protocols is a passive variant of (full) forward secrecy (FS). A natural mechanism to upgrade from wFS to FS is the use of key confirmation messages which ... -
Multi-user CDH Problems and the Concrete Security of NAXOS and HMQV
Kiltz, Eike; Pan, Jiaxin; Riepel, Doreen; Ringerud, Magnus Dotset (Peer reviewed; Journal article, 2023)